No Internet from the day of installation

My Fibre was installed at my premises a week ago and is still not working, I have contacted Mweb and they advised that the fault is on Vuma reach side, the technician who installed the fibre came to my premises and advised that the fault is on mweb's side. Mweb's customer care is terrible. You wait for a long time on the line and nothing is done. Is there any way of reporting Mweb as I am paying for service which does not work.